-s --systemcode=systemcode     control a device with this systemcode
-u --unitcode=unitcode         control a device with this unitcode
-a --all                       send command to all devices with this id
-t --on                        send an on signal
-f --off                       send an off signal

        "living": {
                "name": "Living",
                "switch": {
                        "name": "Switch",
                        "protocol": [ "home_easy_old" ],
			"id": [{
				"systemcode": 1,
				"unitcode": 1
			}],
                        "state": "off"
                }

        }

This protocol sends 50 pulses like this

289 867 289 867
289 867 867 289
289 867 867 289
289 867 867 289
289 867 867 289
289 867 867 289
289 867 867 289
289 867 867 289
289 867 867 289
289 867 867 289
289 867 867 289
289 867 867 289
289 9826

It has no header and the last 2 pulses are the footer. These are meant to identify the pulses as genuine, and the protocol also has some bit checks to filter false positives. We don't use them for further processing. The next step is to transform this output into 12 groups of 4 pulses (and thereby dropping the footer pulses).

289 867 289 867

289 867 867 289
289 867 867 289
289 867 867 289
289 867 867 289

289 867 867 289
289 867 867 289
289 867 867 289
289 867 867 289

289 867 867 289

289 867 867 289

289 867 867 289

289 9826

If we now look at carefully at these groups you can distinguish two types of groups:

1. 289 867 867 289
2. 289 867 289 867

So the first group is defined by a high 3th pulse and the second group has a low 3rd pulse. In this case we say a high 3rd pulse means a 0 and a high 3rd pulse means a 1. We then get the following output:

1 0000 0000 0 0 0

Each (group) of numbers has a specific meaning:

• Unit: 1 till 5 (inversed)
• ID: 6 till 9 (inversed)
• All: 10
• State: 11 (inversed)
• Check: 12 (always 0)

1 0000 0000 0 0 0

• The Unit is defined as a binary number
• The ID is defined as a binary number
• The All is defined as a binary number
• The Check is always 0
• The State defines whether a devices needs to turn on or off

So this code represents:

• Unit: 1
• ID: 1
• All: 0
• Check: always 0
• State: On